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CGI Roofing: The San Antonio Owner’s Guide
If you have a CGI roof in San Antonio and a section is failing, the installed replacement cost typically lands between $400 and $1,800 for a repair, while a full replacement runs $8,000 to $20,000 depending on square footage and pitch. We stock common CGI-compatible fasteners, flashing, and panel profiles on our trucks, and our crew can usually diagnose the exact failure point on the first visit. Most San Antonio homeowners discover a CGI problem the hard way: a water stain on the ceiling after a spring storm, a loose panel rattling during the north winds, or granules washing into a gutter after a heavy downpour.
Which CGI Models This Applies To
CGI’s product line covers standing seam metal, stone-coated steel, and corrugated profile panels, and the compatibility details matter more than most parts pages admit. The stone-coated steel panels CGI is known for use a specific interlocking profile that is not interchangeable with generic standing seam panels from a big-box supplier. If you’re trying to match an existing section, look for the stamped lot number on the underside of a loose panel, or measure the rib spacing: CGI’s standard rib profile runs 9 inches on center on most residential stone-coated lines, and that measurement alone eliminates a lot of wrong guesses. As an independent service provider, we are not affiliated with CGI, but we have been matching and installing their panels and trim across San Antonio long enough to know which OEM parts are worth the wait and which quality aftermarket equivalents will hold up for a decade without leaking.
Styles & brands we work with
Signs Your CGI Roofing Is Failing
- Water staining on ceilings or walls after rain. This usually means a panel lap joint has loosened or a fastener gasket has dried out and cracked. San Antonio’s UV load is brutal on rubber washers, and we see this on roofs as new as eight years.
- Rattling or banging during wind gusts. A panel that moves is a panel that has lost fastener grip, often because the original installer missed a purlin or over-torqued a screw. Once movement starts, the hole widens and the problem compounds fast.
- Granule buildup in gutters. Stone-coated steel sheds some granules early, but steady granule loss after year five usually signals a failing topcoat on an older CGI batch. This shortens the panel’s protective life, not just its looks.
- Visible rust streaks at panel overlaps or around screw heads. Coastal-adjacent San Antonio humidity and occasional freeze-thaw cycles can expose any scratch to oxidation. Once rust starts at a lap joint, water follows the same path.
- Flashing separation around chimneys, skylights, or vents. The panel can be fine while the transition detail fails. We replace more CGI flashing boots and Z-bar than actual panels in San Antonio, especially on homes built before 2015.
See the difference
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AfterReplacement Cost & What’s Included
In San Antonio, repairing a failed CGI panel or flashing section runs $400 to $1,800 installed, depending on roof pitch, access, and how many panels need to be pulled to reach the damaged area. A full CGI roof replacement in this market lands between $15,000 and $40,000 for a typical single-family home, with stone-coated steel at the higher end and standard metal profiles at the lower end. The price you get from us includes the written price before any work starts, labor, matching or near-matching materials, job-site cleanup, and a written guarantee with clearly stated terms covering 365 days from the completion date. If a repair or installation fails within that year, we return at no charge. No change orders, no surprise line items, no verbal estimates that grow on the final bill.
DIY or Call Us?
You can safely check a few things from the ground: which panels look loose, where the stains are inside the house, and whether any flashing is visibly peeled or pulled away. What you should not do is climb a San Antonio roof after a rain to investigate, especially a metal roof, which holds slick spots long after the sun comes out. Falls from roof height are one of the most common construction-related injuries in Texas, and a slippery panel is not the place to learn that lesson. If you see a loose panel or a suspicious stain, call us at (254) 269-5071. We will send someone who knows what to look for, and you will get a written line-item quote before any work begins.
FAQs
A properly installed CGI stone-coated steel roof should last 40 to 50 years in San Antonio’s climate, though fastener gaskets and flashing typically need attention at the 15-to-20-year mark. The panels themselves rarely fail first; the transition details and fasteners do. Call (254) 269-5071 for a no-pressure inspection if your roof is older than 15 years.
Yes, isolated damage from a fallen branch or a single failed lap joint can often be repaired by replacing one or two panels and the affected flashing, which keeps the cost in the $400 to $1,800 range rather than a full roof replacement. The repair is only worth doing if the surrounding panels are still sound. We will tell you honestly which side of that line your roof is on during the estimate.
Most single-panel or flashing repairs in San Antonio are done in one day, assuming the weather cooperates and the matching panel is available locally. Full CGI roof replacements typically take three to seven days depending on roof size, pitch, and the amount of tear-off required. We will give you a written schedule with your written price before work starts.
We keep common fastener types, flashing boots, Z-bar, and trim profiles on the truck, which lets us handle most San Antonio CGI repairs on the first visit. Specialty panels and color-matched stone-coated steel usually take a few days to source, and we will tell you that timeline upfront. Call (254) 269-5071 to schedule a free estimate.
Written by Isaac Pruett, Owner, Mason Remodeling Co San Antonio at Mason Remodeling Co San Antonio, serving San Antonio and nearby areas.
